Steam-turbine.



F. H. LINDNER.

STEAM TURBINE.

APPLICATION FILED MAY 14, 1908.

915,451. Patented M21116, 1909.

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sTEAM TURBINE.

APPLICATION FILED MAY 14, 1908.

Patented Mar. 16, 1909.

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UNITED STATES PATENT- OFFICE.

FRANK LINDNER, OF BAYONNE, NEW JERSEY.

STEAM-TURBINE.

I of which the following is a specification.

My invention relates to elastic fluid turbmes, and particularly to the buckets used in connection therewith; and it has for its object the simple and ready construction of abucket adapted to receive a stream of elastic fluid, deflect the same backwardly and divide and laterally discharge said stream.

. In the accompanying drawings which illustrate my invention-Figure 1 is a side view of a series of buckets. Fig. I is a section on the line 1 1 Fig. 1. Fig. 1 is apartial sectional View illustrating the general arrangeme'nt of directing ports, buckets and arrows.

exhaust chambers. Fig. 2 1s a view of a portion of the turbine showing the exhaust chambers and the directing chambers. Fig. 2 is a sectional view showing directing ports, a modified form of bucket, exhaust ports, exhaust chambers and directing chamber.

. Fig. 3 is a )artial side view showing a number of the mo ified buckets and a portion of the directing port. F igs; 4 and '5 are sectional views taken on the line 4-5, Fig. 3, looking in the direction of the right and left hand arrows respectively. Fig. =6 is a sectional view on the line 66, Fig. 3. Fig. 7 is a partial side View showing a modified form of the buckets shown in Figs.' 3 to 6. Figs. 8 and 9 are sectional views taken respectively on the line 88 and 9 9, looking in the direction of the Fig. 10 is a sectional view on the line 10-10, Fig.7

Similar characters of-reference designate corresponding parts throughout the several views.

Referring to the drawings, 20 designates a rotating wheel disk suitably mountei and ing 22 surrounds this wheel disk and terminates in an annular chamber 23 adapted to receivethe buckets 2-1. An inlet 24, Fig. 2, is adapted to supply a suitable stream of elastic fluid, such as steam to the buckets 21 through' tangentially arranged directing ports 2-5, said fluid passing through and about said buckets in successive stages as set forth in my co-pend'mg application Serial 0. 370,768, filed April 29, 1907 I As therein set Specification of Letters Patent Patented March 16, 1909. 1908. Serial No. 432,876.

forth, the stream of fluid u on entering the buckets at the top is divided and backwardly 'deflected, being finally discharged through the sides of said buckets into exhaust chambers 26 at the sides of said buckets. These succeeding directing ports 25, the exhaust chambers, directing chambers and directing ports increasing in volume proportionately to suit the rate of expansion and the fluid being finally discharged into the atmosphere shown).

In the invention forming the subject of the present application the. buckets do not act in precisely the same manner as those of the aforesaid prior application, being of different construction. however, is substantially the same in both forms of turbines; but the division of the stream of fluid in the latter form is not simultaneous with the deflection of the same backwardly, but occurs thereafter.

As shown in Figs. 1, 1 1 the buckets consist essentially of blades 28 which are adapted to receive the stream of fluid and present a concave surface thereto so as to deflect the same backwardly. These blades terminate in walls 29 which separate successive buckets. Between these successive walls 29 is a oentral dividing wall '30 begin ning at the bottom of the blades 28 and extending downwardly and outwardly with increasing cross-sectional area, the said walls shown in Figs. 1 and 1 This central dividing wall 30 with the walls 29 form the lateral outlet ports 31 of the buckets, which ports discharge the fluid laterally into the exhaust chambers 26. a

In Figs. 3 to 6 I have shown a modified form of bucket, the blades 28 presenting a uniformly concave surface to the said stream of fluid and their outer surface being convex and intersecting the inner surface to form an upper and lower edge substantially perpendicular to the direction of the motion of the buckets. These blades are individually supported by a suitable central dividing stem or wall 32, the stem of one bucket beginning as shown at or near the middle of the said convex surfaceand extending downwardly and outwardly with increasing cross-sectional area, and joins with the stem of the ad acent or into suitable condensing apparatus (not chambers unite to form directing chambers 27 supplying the fluid to the buckets through The general effect,

29 being conveniently secured thereto as bucket forming the lateral exhaust ports 31 adapted to discharge the stream of fluid laterally.

In Figs. 7 to 10 a modification in the manner' of joining the stems of adjacent buckets isshown.

I claim 1 1. In a turbine: a wheel disk rotatably mounted; tangential directing ports to direct a stream of elastic fluid; and a series of buckets u on the periphery of said wheel disk,

said uokets being adapted to receive said stream, deflect the; same backwardly, then divide the same and finally discharge said an ridge being adapted to divide and then *iiieflect laterally the stream of fluid, after it "has left the blades of the buckets.

3. In a turbine: a wheel disk rotatably mounted; tangential directing ports to direct a stream of elastic fluid; and a series of -;buckets upon the periphery of said wheel disk, said buckets consisting of blades adapted to receive the said stream, presenting a concave surface thereto and deflecting the said stream backwardly, and the said blades terminating in walls separating successive buckets; and a central dividing wall between successivejwalls', adapted to divide said backwardly directed stream and forming with said separating vwalls lateral outlet ports to discharge said stream laterally.

4. Ina turbine: a wheel disk rotatably mounted; tangential directing ports to direct a stream of elastic fluid; and a series of buckets upon the periphery of said wheel disk, said buckets consisting of blades adapted toireceive the said stream, presenting a concave surface thereto and deflecting the said stream backwardly, and the said blades terminating in walls separating successive buckets; and. a central dividing wall of increasing cross-sectiorial area downwardly between successive walls adapted to divide said backwardly directed stream and forming with said separating walls lateral outlet ports to discharge said stream laterally.

Signed at New York in the county of New York and State of New York this 13th day of May A. D. 1908;

FRANK H. LINDNER.

Witnesses:

LAURA E. SMITH, FREDK P. SoHUETz. 

